期刊
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
卷 23, 期 3, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2012.2235893
关键词
Magnetic resonance imaging (MRI) magnet; Y-Ba-Cu-O (YBCO) coils; YBCO magnet
资金
- New Zealand Ministry of Business, Innovation, and Employment, Transformational Research, Science, and Technology Grant [C0X0818]
A 1.5 T magnet suitable for magnetic resonance imaging has been designed and constructed. The magnet uses 4.8 km of Y-Ba-Cu-O (YBCO) high temperature superconductor conductor sourced from AMSC. The conductor was wound into 16 double pancake coils distributed to achieve a magnetic field, which may be passive shimmed to +/- 20 ppm over a 120-mm-diameter spherical volume. The magnet has successfully been operated at 20 K and 130 A, achieving the desired 1.5 T field. Initial assessments indicate the realized magnetic field homogeneity is within the limits of the chosen passive shimming method.
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